Table 1. Apatite fission track age and
kinetic parameter data, East MacKay I-77 sample. |
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2Auto- |
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6Meas. |
7Corr. |
8Calc. |
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10Calc. |
10Calc. |
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1Grain |
scan |
Ns |
3Ni |
4Quads |
U |
Measured Cl |
5FT age |
Dpar |
Dpar |
OH |
9rmro |
Dpar |
Cl |
Comment |
No. |
No. |
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(ppm) |
(wt%) |
(apfu) |
(Ma) |
(mm) |
(mm) |
(apfu) |
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(mm) |
(apfu) |
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young
outlier age (reset or caved?) |
1 |
2 |
41 |
172 |
80 |
12 |
- |
- |
48.3 ± 8.5 |
1.53 |
1.61 |
- |
- |
- |
- |
mt#2 |
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kinetic
population #1 |
2 |
19 |
10 |
37.77a |
40 |
5 |
0.0128 |
0.0036 |
53.6 ± 19.1 |
1.48 |
1.56 |
0.0935 |
0.8364 |
1.79 |
0.0112 |
mt#3 |
3 |
1 |
13 |
29.82a |
12 |
14 |
0.0191 |
0.0053 |
88.0 ± 29.3 |
1.61 |
1.70 |
0.0974 |
0.8222 |
1.92 |
0.0507 |
mt#3 |
4 |
8 |
15 |
43.73a |
4 |
60 |
0.0203 |
0.0058 |
69.3 ± 20.8 |
1.72 |
1.80 |
0.1197 |
0.8392 |
1.76 |
0.0032 |
mt#3 |
5 |
1 |
27 |
55 |
50 |
6 |
0.0699 |
0.0199 |
99.0 ± 23.4 |
1.55 |
1.62 |
1.0812 |
0.7594 |
2.38 |
0.1943 |
mt#1 |
6 |
7 |
6 |
9 |
20 |
2 |
0.0773 |
0.0217 |
134.1 ± 70.8 |
1.98 |
2.09 |
1.2022 |
0.8037 |
2.07 |
0.0977 |
mt#1 |
7 |
2 |
11 |
28.82a |
12 |
13 |
0.0927 |
0.0257 |
77.1 ± 27.4 |
1.42 |
1.49 |
0.0694 |
0.8333 |
1.82 |
0.0201 |
mt#3 |
8 |
6 |
18 |
36.78a |
12 |
17 |
0.1107 |
0.0310 |
98.7 ± 28.5 |
1.15 |
1.21 |
0.0000 |
0.8254 |
1.89 |
0.0422 |
len grn 6, mt#3 |
9 |
24 |
12 |
34.79a |
25 |
8 |
0.1167 |
0.0323 |
69.7 ± 23.4 |
1.46 |
1.53 |
0.0000 |
0.7953 |
2.13 |
0.1176 |
mt#3 |
10 |
39 |
41 |
72.56a |
6 |
66 |
0.1686 |
0.0466 |
113.8 ± 22.4 |
1.61 |
1.70 |
0.4489 |
0.8168 |
1.96 |
0.0648 |
len grn 39, mt#3 |
11 |
8 |
5 |
14 |
24 |
3 |
0.1710 |
0.0483 |
72.2 ± 37.7 |
2.03 |
2.14 |
1.0426 |
0.7299 |
2.56 |
0.2492 |
mt#1 |
12 |
43 |
16 |
15.90a |
12 |
7 |
0.2709 |
0.0760 |
201.3 ± 71.3 |
1.77 |
1.86 |
0.1987 |
0.8239 |
1.90 |
0.0461 |
mt#3 |
13 |
7 |
8 |
11.93a |
12 |
5 |
0.2974 |
0.0838 |
134.9 ± 61.7 |
1.74 |
1.82 |
0.3524 |
0.7707 |
2.31 |
0.1715 |
mt#3 |
14 |
13 |
6 |
14 |
15 |
5 |
0.3242 |
0.0931 |
86.5 ± 42.3 |
1.54 |
1.62 |
0.7301 |
0.7549 |
2.41 |
0.2031 |
mt#1 |
15 |
5 |
30 |
70.57a |
32 |
12 |
0.3529 |
0.0979 |
85.8 ± 18.8 |
1.62 |
1.70 |
0.2487 |
0.7614 |
2.37 |
0.1904 |
len grn 5, mt#3 |
16 |
16 |
8 |
14.91a |
10 |
8 |
0.3559 |
0.0987 |
108.2 ± 47.4 |
2.42 |
2.55 |
0.9539 |
0.7124 |
2.66 |
0.2791 |
mt#3 |
17 |
11 |
19 |
28.82a |
16 |
10 |
0.3658 |
0.1044 |
132.6 ± 39.3 |
1.84 |
1.94 |
1.0355 |
0.7752 |
2.28 |
0.1621 |
mt#3 |
18 |
11 |
24 |
59 |
24 |
13 |
0.3769 |
0.1082 |
82.2 ± 20.0 |
1.93 |
2.02 |
0.5446 |
0.7298 |
2.56 |
0.2494 |
mt#1 |
19 |
3 |
81 |
204 |
50 |
22 |
0.3902 |
0.1118 |
80.2 ± 10.7 |
1.61 |
1.70 |
0.7408 |
0.7089 |
2.68 |
0.2848 |
len grn 3, mt # 2 |
20 |
3 |
12 |
25 |
30 |
5 |
0.4078 |
0.1167 |
96.8 ± 34.1 |
1.79 |
1.89 |
0.9129 |
0.7080 |
2.68 |
0.2863 |
len grn 3, mt#1 |
21 |
10 |
3 |
8.95a |
15 |
3 |
0.4330 |
0.1206 |
67.8 ± 45.2 |
2.21 |
2.32 |
0.8708 |
0.6891 |
2.78 |
0.3160 |
3 pits, mt#3 |
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90.4 ± 6.1b |
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kinetic
population #2 |
22 |
44 |
22 |
16.90a |
10 |
9 |
0.4680 |
0.1276 |
259.4 ± 84 |
1.93 |
2.03 |
0.0284 |
0.7747 |
2.28 |
0.1632 |
mt#3 |
23 |
17 |
12 |
12.92a |
12 |
6 |
0.4683 |
0.1345 |
186.1 ± 74.6 |
1.86 |
1.96 |
0.5508 |
0.7038 |
2.70 |
0.2930 |
mt#3 |
24 |
37 |
20 |
15.90a |
10 |
9 |
0.4938 |
0.1361 |
250.7 ± 84.3 |
2.18 |
2.29 |
0.6033 |
0.7612 |
2.37 |
0.1908 |
len grn 37, mt#3 |
25 |
3 |
7 |
4.97a |
9 |
3 |
0.4461 |
0.1366 |
280.1 ± 164.2 |
2.01 |
2.12 |
0.5746 |
0.7391 |
2.51 |
0.2327 |
len grn 3, mt#3 |
26 |
23 |
23 |
31.81a |
12 |
14 |
0.5149 |
0.1467 |
145.3 ± 39.9 |
2.08 |
2.18 |
0.4395 |
0.7671 |
2.33 |
0.1790 |
mt#3 |
27 |
48 |
34 |
28.82a |
6 |
26 |
0.5483 |
0.1549 |
235.4 ± 59.8 |
1.99 |
2.09 |
0.5122 |
0.7852 |
2.21 |
0.1404 |
len grn 48, mt#3 |
28 |
22 |
24 |
19.88a |
15 |
7 |
0.5586 |
0.1887 |
240.8 ± 73.2 |
2.24 |
2.36 |
0.2746 |
0.7034 |
2.71 |
0.2936 |
mt#3 |
29 |
15 |
16 |
16.90a |
15 |
6 |
0.8091 |
0.2294 |
189.7 ± 66.2 |
1.82 |
1.91 |
0.5261 |
0.7308 |
2.56 |
0.2476 |
mt#3 |
30 |
12 |
21 |
20.87a |
16 |
7 |
0.7667 |
0.2344 |
201.3 ± 62.3 |
1.97 |
2.07 |
0.5608 |
0.6984 |
2.73 |
0.3016 |
mt#3 |
31 |
33 |
17 |
10.93a |
9 |
7 |
0.8360 |
0.2539 |
308.5 ± 119.6 |
2.19 |
2.30 |
0.6774 |
0.6942 |
2.75 |
0.3080 |
mt#3 |
32 |
20 |
24 |
17.89a |
9 |
11 |
1.7202 |
0.5877 |
267.1 ± 83.5 |
3.02 |
3.18 |
0.7122 |
0.4670 |
3.61 |
0.5718 |
len grn 20, mt#3 |
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222.2 ± 22.5c |
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high Cl outlier
ages (caved?) |
33 |
18 |
11 |
40.75a |
15 |
15 |
0.6750 |
0.1876 |
54.6 ± 18.6 |
2.49 |
2.62 |
0.5387 |
0.7323 |
2.55 |
0.2449 |
mt#3 |
34 |
27 |
4 |
10.93a |
35 |
2 |
1.1940 |
0.3370 |
73.9 ± 43.2 |
2.49 |
2.62 |
0.6061 |
0.6684 |
2.88 |
0.3465 |
mt#3 |
35 |
2 |
10 |
30 |
24 |
7 |
1.2995 |
0.3791 |
67.4 ± 24.7 |
2.54 |
2.67 |
0.9001 |
0.6071 |
3.14 |
0.4270 |
len grn 2, mt#1 |
1All analyses by A. Grist with zeta calibration factor, 353.5±7.1,
relative to CN5 glass dosimeter (Nd12=4281, rd12=1.15x106 for age mounts 1 |
and 2; Nd3=5387, rd3=1.157x106 for age mount 3) |
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2Autoscan number used for locating grains for microprobe
measurements |
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3Number of induced tracks for grains from age mount 3 (denoted by
a) were adjusted to compensate for different irradiation conditions so that |
all counts could be pooled (Ni x rd12/rd3) |
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4Number of quadrants (each of area, 9.31 x 10-7 cm2) used on counting grid |
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5Age ± one standard deviation; pooled
ages, b - pass c2 test, Q = 0.76 and c - pass c2 test, Q = 0.97 |
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6Average etch figure size parallel to c-axis measured by A. Grist
(1.74 mm for Durango
apatite) |
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7Corrected by reference to Carlson et al. (1999) Durango apatite Dpar value (1.83 mm) |
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8OH concentration calculated using microprobe data (Table 3) |
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9Kinetic parameter calculated using full probe data (Table 3) in
equation 6 of Carlson et al. (1999) |
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10Calculated using rmro value and equations 4a,b of Ketcham et
al. (2000) |
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